A composer, improviser, and trumpeter, Dave Douglas develops music that transcends the boundaries of traditional jazz. In 2000, when he was McParland's guest, he was named JazzTimes magazine's "Artist of the Year." On this Piano Jazz, Douglas talks about his album Soul on Soul, his stunning tribute to Mary Lou Williams. He and McPartland share their love for Williams' music with their rendition of "Cloudy." Bassist James Genus joins them to perform another Williams tune, "Scratchin' in the Gravel."